.button {
  display: inline-block;
  text-align: center;
  outline: 0 none;
  -webkit-appearance: none;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  min-width: 50px;
  font-size: 18px;
  height: 47px;
  line-height: 47px;
  padding-left: px2rem(12);
  padding-right: px2rem(12);
  overflow: hidden;
  text-overflow: ellipsis;
  word-break: break-word;
  white-space: nowrap;
  color: #000;
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 5px;

  .span {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
  }
}